The B54102H1020A001 from EPCOS(TDK) is their PowerHap Piezo Haptic Actuator with adjustable haptic feedback. This part can be used as both an actuator or a sensor. Depending on area of application and geometry, PowerHap actuators can be mounted and operated in various ways.
There is a sample ordering code, Z63000Z2910Z 1Z 5, available. The only difference between this code and the normal part number is that the samples come with wires attached for ease of prototyping.
Applicable part numbers